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Physics MCQs | Objective Type Questions SET-15
Q1. Clear nights are colder than cloudy nights because of
(a) conduction
(b) condensation
(c) radiation
(d) insulation
Ans. : c
Q2. A gas thermometer is more sensitive than a liquid thermometer because a gas :
(a) is lighter than liquid
(b) expands more than a liquid
(c) is easy to obtain
(d) does not change state easily
Ans. : d
Q3. Which one of the following is used for sun glasses ?
(a) Pyrex glass
(b) Flint glass
(c) Crooks glass
(d) Crystal glass
Ans. : c
Q4. The speed of light with the rise in the temperature of the medium:
(a) Increases
(b) Decreases
(c) Remains unaltered
(d) Drops suddenly
Ans. : c
Q5. When the barometer reading dips suddenly it is an indication of
(a) Hot weather
(b) Calm weather
(c) Storm
(d) Dry weather
Ans. : c
Q6. Good conductor of electricity is
(a) dry air
(b) paper
(c) kerosene
(d) graphite
Ans. : d
Q7. Heat from the Sun reaches the Earth by
(a) Reflection
(b) Conduction
(c) Radiation
(d) Convection
Ans. : c
Q8. In which of the following cases kinetic energy is being used in performing work?
(a) Paddling the bicycle to cover a distance
(b) Driving a car to cover a distance
(c) Wind mill grinding wheat grain
(d) Rowing a boat in the lake
Ans. : b
Q9. If the velocity time graph of a particle is represented by
y = mt + c then the particle is moving with
(a) constant speed
(b) constant velocity
(c) constant acceleration
(d) varying acceleration
Ans. : c
Q10. Which of the following occurred first?
(a) Albert Einstein propounded the General Theory of Relativity
(b) Max Planck unveiled the Quantum Theory
(c) Guglielmo Marconi sent out the first wireless signals
(d) Wright Brothers successfully flew an aircraft
Ans. : c